'Rainbow In The Dark: The Autobiography Of Ronnie James Dio', will be published in the spring of 2012 via MTV Books.

Ronnie's widow and manager, Wendy Dio revealed in a recent interview that the memoir was three-quarters written before the singer's death and that she had until June 2011 to finish it so that it could be released the following spring.

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"Everything Ronnie did, lyrics or anything, was always handwritten," Wendy told VH1 Classic Rock Nights. "He didn't do anything on the computer. So he would handwrite it and then he'd give it to me and then I'd give it to my assistant, she'd type it up. So that's how it went and, of course, I'd read it along the way and it's very, very interesting. It's just interesting the way his stories are; he was a storyteller. Ronnie was always a storyteller and it's just great stories."

'Rainbow In The Dark: The Autobiography Of Ronnie James Dio' was sold at auction to Jacob Hoye, Senior Director of Publishing at MTV Books, by Shawna Morey, in her first deal at Folio Literary Management, LLC.

Ronnie also leaves us perhaps his most important legacy, the Ronnie James Dio 'Stand Up And Shout' Cancer Fund, a non-profit charity founded by Wendy Dio, to fund and advocate for cancer research and screenings for society's underprivileged.

Ronnie passed away on May 16th 2010 after a lengthy battle with cancer.